body {
  width: 100%;
  height: 100%;
  background-color: @mainColor;
}
// 最小宽度是1025
@media screen and(min-width:1025px){
  html{
    font-size: 100px;
    height: 100%;
    background-color: #e6e6e661;
  }
  body{
    width:640px;
    height: 100%;
    margin: 0 auto;
    box-shadow:1px 1px 8px  #45454569;
    background-color: white;
  }
}
// 小尺寸适配
@media screen and(max-width:319px){
  html{
    font-size: 45px;
    height: 100%;
    background-color: #e6e6e661;
  }
  body{
    width:100%;
    height: 100%;
  }
  #head{
    h1{
      width:0rem !important;
      height: 0px;
      div{
        width:0rem;
        background-image: none;
      }
    }
    .login,.logo{
      display: none;
    }
    .search{
      width:100%;
      height: 100%;
    }
  }
  #banner{
    ul li{
      height: 100px !important;
    }
  }
}
